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Program Standards

WALLS & CEILINGS:

Walls

Cumulative R-Value for exterior walls will be no less than R-16. Fiberglass batts should be faced stapled to the studs. Fibrous batt insulation should not be cut short or cut long and forced/compressed into small areas. Fibrous batts should be cut around electrical boxes to minimize compression and split around plumbing and wiring. Wet spray cellulose should be cropped smoothly to prevent convective channels and void cavities between the insulation and sheetrock. Fiberglass may not be used as a packing material around window or door frames, plumbing stacks or gaps in framing. These areas should be filled with a foam product(s) or caulking.

Ceiling

R-values for various ceiling cavities depend on the area of space and construction techniques. Listed below are the various R-values for different ceiling/roof areas.

  1. Conventional Ventilated Attic - R-38 will be installed in all conventional ventilated ceiling areas. This R-rating can be reached by installing any combination of fibrous, cellulose, mineral wool or closed cell foam insulation. Member services representatives should be consulted per blown application for approximate insulation thickness.
  2. Roof/Ceiling Combinations - A minimum R-25 insulation will be installed in Roof/Ceiling applications.
  3. Knee Walls - Knee walls will be insulated with a minimum R-19 insulation. Knee wall insulation should have a covering to keep the insulation in place without compressing it on the unconditioned side.